道連れ

プログレッシブ和英中辞典(第4版)

みちづれ【道連れ】

a fellow traveler [passenger]; a traveling companion

道連れになる
(happen to) travel together ((with))／fall in ((with))

旅は道連れ
Traveling is more enjoyable with companions [company] (than alone).

子供を道連れに自殺した
She killed her child and committed suicide.／She took her child with her to the next world.

出典　小学館「プログレッシブ和英中辞典(第4版)」